alt Hacker NewsDoes pure-ish CO2 have advantages over regular air or the freon-like substance used in air conditioning?
How much energy us used to purify and maintain the CO2?
Replies
analog31 • yesterday at 6:59 PM
It's easy to liquefy, so it has a density advantage over air, and would be bad if released but not super bad.
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cogman10 • yesterday at 6:55 PM
It's pretty cheap to acquire a boatload of and, assuming you don't get it directly from burning fossil fuels, there's really no environmental harms of it leaking into the atmosphere. [1]
[1] https://en.wikipedia.org/wiki/Carbon_capture_and_storage
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These days CO2 is actually quite commonly used in air-conditioners as a refrigerant, R-744. Fluorinated gases like Freon are being phased out due to being even worse for global warming.